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4 years ago

I don’t know if these are correct please help Will mark brainliest :)

Physics

1 answer:

Licemer1 [7]4 years ago

7 0

Im not to good at geography but I think you are correct :)

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An object with a mass of 2.0 kg accelerates 2.0 m/s 2when an unknown force is applied to it. What is the amount of force?

Musya8 [376]

Answer:

4 N

Explanation:

mass = 2 kg

acceleration = 2 m/s^2

Force = mass * acceleration

= 2 *2

= 4 N

5 0

3 years ago

Question 7 Points 3 5 A vehicle is traveling with the velocity of 120 km/h. How much distance will it cover in 30 s? d

ludmilkaskok [199]

Answer:

Velocity v = 120 km/h

Time t = 30 s

Let Distance be d

First, we need to convert 120 km/h into m/s

1 km/h = (1000m)/(3600 s) = 5/18 m/s

So, 120 km/h = 120×5/18 m/s

So, v = 200/6 m/s

Now, velocity = distance/time

So d = v×t

So, d = (200/6) × 30

So, d = 1000 m

So, d = 1 km

Thus, distance travelled is 1 km

Explanation:

8 0

3 years ago

Read 2 more answers

Consider a conical pendulum with a bob of mass m = 80.0 kg on a string of length L = 10.0 m that makes an angle of 5.0 degrees w

SCORPION-xisa [38]

Answer:

0.8582 m/s^2

Explanation:

mass of the bob m = 80 kg

length of the string L= 10.0 m

angle made with the vertical θ= 5.0

let the force exerted by the string = T

from the FBD

T cosθ= mg

T cos 6°= 80×9.81

⇒T= $\frac{70\times9.81}{cos5}$

= 787.79 N

how horizontal component of tension $T_h$

$T_h= Tsin\theta$

=787.79 sin 5°= 68.66 N

Now, radial acceleration, $a_c= \frac{T_h}{m}$

= 68.66/80= 0.8582 m/s^2

8 0

4 years ago

3. Escribe en Notación científica 6000m

Nuetrik [128]

Answer:

6 x 10³ [m]

Explanation:

La notación científica corresponde a multiplicar el primer numero por una base de 10 elevada a la potencia requerida, esa potencia se determina por la cantidad de ceros después del numero. Para el ejercicio.

6000 [m] = 6 x 10³ [m]

Elevado a la tres, ya que se tienen 3 ceros después del numero seis.

Otro ejemplo seria 25000; 25 x 10³

Mas ejemplos:

3645 = 3.645 x 10³ (tres números a la derecha después del primer numero)

550000 = 550 x 10³, también es igual a 55 x 10⁴.

3 0

3 years ago

A bowling ball has a mass of 5 kg, a moment of inertia of 0.0648 kg·m2, and a radius of 0.18m. It rolls along the plane without

oksian1 [2.3K]

Answer:

$K.E=80.6388J$

Explanation:

Given data

Mass m=5 kg

Moment of Inertia I=0.0648 kg.m²

Radius r=0.18 m

Linear Speed v=4.8 m/s

To find

Total Kinetic Energy K.E

Solution

The total kinetic energy K.E can be found as below

$K.E=(1/2)Iw^{2}+(1/2)mv^{2}\\$

First we need to find the angular speed ω

$w=(v/r)\\w=(4.8/0.18)\\w=26.66rad/s$

Substitute the angular speed and given values to find total kinetic energy

$K.E=(1/2)Iw^{2}+(1/2)mv^{2}\\K.E=(1/2)(0.0648kg.m^{2} )(26.666rad/s)^{2}+(1/2)(5kg)(4.8m/s)^{2}\\K.E=80.6388J$

7 0

3 years ago